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Cancels an active review cycle for a controlled document by calling the underlying controller's cancel_cycle method and returns a success status with a message.

Purpose

This function provides a high-level interface to cancel a document review cycle. It is used when a review process needs to be terminated before completion, optionally recording a reason for the cancellation. The function is decorated with log_controller_action to ensure all cancellation actions are logged for audit purposes. It delegates the actual cancellation logic to an internal _controller object and returns a standardized response indicating success or failure.

Source Code

def cancel_review_cycle(user: DocUser, review_uid: str, reason: Optional[str] = None) -> Dict[str, Any]:
    """Cancel a review cycle."""
    success = _controller.cancel_cycle(
        cycle_uid=review_uid,
        reason=reason
    )
    return {"success": success, "message": "Review canceled successfully" if success else "Failed to cancel review"}

Parameters

Parameter Details

user: A DocUser object representing the authenticated user performing the cancellation. This parameter is likely used by the decorator or for permission checking, though not directly used in the function body. The user must have appropriate permissions to cancel review cycles.

review_uid: A string containing the unique identifier (UID) of the review cycle to be canceled. This is passed to the controller's cancel_cycle method as the cycle_uid parameter.

reason: An optional string parameter that allows the user to provide a reason or explanation for canceling the review cycle. Defaults to None if no reason is provided. This reason may be stored in audit logs or notifications.

Return Value

Type: Dict[str, Any]

Returns a dictionary with two keys: 'success' (boolean indicating whether the cancellation was successful) and 'message' (string containing either 'Review canceled successfully' if success is True, or 'Failed to cancel review' if success is False). The return type is Dict[str, Any] to allow flexibility in the dictionary values.

Dependencies

• CDocs

Required Imports

from typing import Dict, Any, Optional
from CDocs.models.user_extensions import DocUser
from CDocs.controllers import log_controller_action

Usage Example

from CDocs.models.user_extensions import DocUser
from your_module import cancel_review_cycle

# Assume user and review_uid are already obtained
user = DocUser.query.get(user_id)
review_uid = "rev_12345"
reason = "Document requirements changed"

# Cancel the review cycle
result = cancel_review_cycle(user=user, review_uid=review_uid, reason=reason)

if result["success"]:
    print(f"Success: {result['message']}")
else:
    print(f"Error: {result['message']}")

# Cancel without providing a reason
result = cancel_review_cycle(user=user, review_uid=review_uid)
print(result["message"])

Best Practices

• Always provide a meaningful reason when canceling a review cycle for better audit trail and transparency
• Ensure the user has appropriate permissions before calling this function (the decorator likely handles this)
• Check the 'success' key in the returned dictionary before proceeding with subsequent operations
• Handle the case where cancellation fails gracefully in your application logic
• The function is decorated with log_controller_action, so all calls are automatically logged
• Consider notifying affected reviewers when a review cycle is canceled
• Verify that the review_uid exists and is in a cancellable state before calling this function

Tags

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